Confession......i Hate/am Intimidated By Wiring.

I HATE WIRING

Baseline is 67 CJ-6 w/225. I'm in the process of rebuilding the driveline, so while I was gutting the old gal I thought I'd "pop in" a new wiring harness I got from Walck's 6 - 9 years ago. All in all pretty happy, my other wiring harness experience is based on a 42 Dodge Military Carryall, everything was numbered on that harness. Not so much on this one, and the old wiring was a candy-cane assortment of red and white wires, literally all of them. So, I'm sure it's a simple Q, and am happy to take the spears for help and input. I've searched the site and not really found a good description of what goes where on the starter switch.

In particular, two wires coming from multi gauge (grey and purple pigtails from the lamp sockets respectively for Oil Pressure & Amp idiot lights), the instructions state that they should go to the "Coil" position of the starter switch. My switch does not have a coil terminal, rather Start in the center and an ACC, an IGN, and a Batt terminal. My assumption is when they say "Coil" they mean really IGN.

Also, since I've got you hooked, can you confirm which terminal the the Wipers, Signals, Fuel Gauge, Heater Blower and Electric Fuel Pump would be correctly attached to to keep all the electrical demons inside their respective looming.

Figured I'd ask just to make sure, rather than smoke check something. Besides, I'll probably need this thread going forward.

Thanks a bunch in advance for everyone's help

 

I know wiring can be very intimidating. I pulled a factory TBI wiring harness, eliminated wires and hook it all to the original wiring harness that was in the Jeep. My suggestion. Hook up the wires you know where they go and go from there.
Find the hot and ground wire. The rest should be easy to figure out.

 

Correct. However, I'm not much help on the color coded wires.

 

Wiring was the only thing I paid someone else to do for my Jeep.

 

I agree. One step at a time. I find it helpful to make an expanded copy of the wiring diagram from the manual. Blow it way up. Then take highlighters to the various wires. Not only do you get familiar with the schematic, but you also can actually follow the darn thing.

 

Put whatever diagram you have on a thumb drive, go to Kinko's and have them print it as big as possible. We used to do that for all manner of drawings when I was a service engineer traveling. patience is your friend, Cheers!

 

That sounds super irritating. The wires should have had some sort of labeling, its why you bought one and didn't make it yourself.

When I first did this in the olden days, I laid out the schematic and made my own harness. Its pretty easy to do if you take your time. I am in process of putting a 4.3 in my CJ2A and opted to buy a harness from Howell and while expensive, was well made and labelled where everything goes.

Look at the schematic and trace what you dont know. Do one circuit at a time until you figure it out. Get a multimeter and check continuity between one wire end and another to make sure its the same wire if they are all the same color.

Good luck

 

This is someone's from here. Let me try and attach. That said, I know my turn signal colors don't match anything I found on line. I took it apart and figured it out. But this is diagram is spot on my Waulk's harness in my 1971

 

The two grey wires will have one (either one) going to ign on switch and the other going to term #1 on delco alt. 10 or 12si types. The purple wires will have one (either one) going to the ign on ignition switch and the other goes out to the oil pressure switch.

 

We're finishing up the same swap. LV3 Direct Injection 4.3 into a CJ2A. Howell: yes expensive, yes well made! Note the labels. I'm definitely not good at wiring and so we're having a local GM tech finish it up for us. Hoping to have this one running some time this summer.

 

One thing I think you will notice about this site, nobody actually gives you a hard time for asking questions. Maybe a fun ribbing between guys who know each other but it's the most well mannered, feel good site on all the internet.

 

As other have said blow up the schematic as large as you can and work circuit by circuit. If you get stuck on some specifics you can give Carl Walck a call too. I had to call him a couple times when I installed a harness in my ‘56 CJ5 because I couldn’t figure out my non-turn signal work around with the harness with signal wires. Carl can be a little curt at times because he’s really busy at the shop so don’t take it personally - he’s a good and helpful guy.

 

Good advice.

Find a copy machine and make a few copies of the schematic, section by section, blown up twice their usual size. Then tape or paste them together into one oversized copy. Buy a package of colored pencils at the local art store (ie Michael's, ca $10). Color each wire with it's color in the wiring harness.Start at one end and trace through the wire with your pencil. Find that wire in the harness and compare both ends to the ends you found on your drawing.

https://www.amazon.com/AmazonBasics-Hobby-4-0-24c-Colored-Pencils/dp/B07D93R5HV/ref=sr_1_7

On a second copy of your enlarged schematic, color through each wire as you connect it.

This is what I did when I was a teenager to sort out the wiring in my cars and trucks.

You don't need Carl's help unless there is a mistake in the diagram. Automotive wiring is simple and easy if you take it one circuit at a time, and refuse to be overwhelmed. None of these circuits are complicated, there are just a bunch of simple circuits bundled together.

This is work, but it's not difficult.

 

Yep, best way to eat an elephant, one bite at a time. Have wired many cars before the internet was a source. Used to go to the library and copy pages out of Chiltons or Motors manuals. If you can't find your wire color in the schematic, trace that particular wire in the harness and see where it originates from. These old Jeeps don't have many wires overall. Patience and observation are your friend. Good luck, you'll get there.

Used to have in laws in Cloudcroft. Beautiful area.

 

Source > load > switch > ground, or source > switch > load > ground.
There's always a switch; sometimes more than one. Relays, solenoids, and ignition points are switches.
Generator/alternator is the source for the charging system. Regulator is the switch. Battery is the load.
For all other circuits the battery is the source. Lights, horn, ignition, etc., are the loads.